This app offers a vintage-inspired stereo delay effect with advanced modulation, flexible filtering, and precise timing controls. It allows users to sculpt unique echo textures, from warm analog sounds to complex, evolving soundscapes.



249+ iOS apps curated and reviewed
GSDSP Quantum Delay is the household name in gsdsp quantum delay, but it's far from the only option. We track 249+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | $14.99 | 4.8★ (17) | No | No | Aug 2026 | |
| 2 | Free | 5.0★ (3) | No | No | Jun 2026 | |
| 3 | $29.99 | 4.7★ (14) | No | No | Aug 2026 | |
| 4 | $4.99 | — | No | No | May 2026 | |
| 5 | $5.99 | 3.9★ (15) | No | No | May 2026 | |
| 6 | $2.99 | 4.8★ (5) | No | No | Jul 2026 | |
| 7 | $1.99 | 5.0★ (4) | No | No | Jul 2026 | |
| 8 | $5.99 | 4.8★ (22) | No | No | May 2026 |



This app offers a vintage-inspired stereo delay effect with advanced modulation, flexible filtering, and precise timing controls. It allows users to sculpt unique echo textures, from warm analog sounds to complex, evolving soundscapes.



This audio effect plugin offers vintage-inspired stereo delay with deep modulation, flexible filtering, and creative timing options. It allows for precise control over echoes, from warm analog sounds to shimmering textures, and integrates an advanced modulation system for unique sound design.



This app offers a unique spectral delay effect with advanced control over thousands of parallel delays using a single curve. It allows for real-time modulation, tempo-syncing, and precise feedback management for expansive sonic exploration.




This app offers dual stereo delay lines for a vast array of audio effects, from simple echoes to complex soundscapes. It features individual bypass, modulation routing, and tempo synchronization options.


This audio unit plugin creates natural-sounding stereo delays with unique panning that expands stereo width without sounding repetitive. It features filters and a mixing matrix for dynamic echo placement, ideal for adding depth to music.


This audio effect plugin offers a unique delay with a cosmic ambient soundscape. It utilizes the Golden Ratio in its design for versatile and unconventional sound manipulation, featuring three stereo delay lines with variable modulation and lo-fi texture.


This audio effect app provides versatile delay sounds, from classic tape echoes to experimental textures. It offers dual buffers with extensive shaping, glitchy repeats, and intuitive visual feedback for creative sound design.


This audio effect plugin offers analog-modeled filters with flexible routing and dynamic modulation for creative sound design. It provides extensive control over tone shaping and complex filtering with various filter types and configurations.


This audio effects plugin offers dual dynamic stereo delays that respond to input intensity and note spacing. It allows for experimental sound design, atmospheric textures, and even looping, with bonus effects like octave pitch-shifting and random reversing.


Create unique soundscapes with a polyphonic harmonizing delay effect. Harmonize chords with multiple intervals simultaneously, control parameters with MIDI, and switch to mono mode for vocals. Explore a new dimension of musical expression.


This app offers a unique dual delay effect inspired by analog hardware. It features independent control over two delay lines with various sound models and flexible routing options for creative sound design.


Explore four distinct distortion effects—Saturation, BitCrush, Ring Modulation, and Downsampling—blended and controlled via an intuitive XY pad. Shape harmonics, reduce digital resolution, introduce inharmonic motion, and create classic digital degradation for unique audio textures.


This app emulates the warm, organic sound of vintage tape delay units. It offers advanced features like independent stereo controls, tape-like EQ, and modulation for unique sonic textures. Includes a classic version for nostalgic users.


This app offers an interactive approach to music composition, focusing on detailed steps that can be arranged into looping sequences. It provides extensive control over note parameters and allows for real-time manipulation and experimentation.


This app is a semi-modular audio effect plugin featuring dedicated filter, delay, and modulation sections. It allows for the creation of rhythmic filter sequences and a wide range of complex audio effects through its flexible modulation matrix.


This audio effect plugin creates a unique stereo reverse delay sound. It captures your dry signal and plays it back in reverse, with independent control over left and right channel delay times, modulation, and stereo spread for creative sound design.


This app offers four distinct audio effects: analog-style tape delay, realistic spring reverb, bucket brigade modulation effects, and classic tone shaping. It blends analog warmth with digital precision for studio or live use.


This audio effect plugin creates unique stereo delay soundscapes using four independent delay lines. It offers advanced control over delay times, regeneration, modulation, and filtering for ambient and experimental audio textures. It can be used standalone or within compatible host applications.


Create generative ambient music and captivating visualizers with this sonic instrument. Explore diverse soundscapes, from gentle strings to glass bells, and customize your experience with various visual themes. Easily record and share your creations, or use it for relaxation and focus.